Certified Wound Ostomy Nurse (CWON) Practice Test

Which description best fits the area referred to as the nail matrix?

1. A region at the tip of the nail

2. The area responsible for nail plate growth

3. Surface layer of the nail bed

4. Soft tissue surrounding the cuticle

The correct answer is: The area responsible for nail plate growth

The nail matrix plays a crucial role in the growth of the nail plate. It is located beneath the base of the nail, under the cuticle, and is composed of rapidly dividing cells. These cells produce keratin, which is the primary component of the nail. As new cells are generated in the matrix, they push older cells forward, allowing the nail plate to grow longer. This process is essential for maintaining nail health and ensuring proper nail formation. Other descriptions do not accurately characterize the nail matrix. For instance, the area at the tip of the nail refers more to the distal part of the nail rather than the growth area. The surface layer of the nail bed pertains to the skin under the nail plate rather than the origin of nail growth. Lastly, the soft tissue surrounding the cuticle describes the eponychium, which is distinct from the nail matrix itself. Thus, the best description fitting the area referred to as the nail matrix is indeed its responsibility for nail plate growth.